Recording calorimeter for gas



Aug. 11, 1925.

S. FISHER RECORDING CALORIMETER FOR GAS Filed Aug. 8, 1924 2 Sheets-Shut l INVENTOR v BY I ATTORNEY wn-usss:

Aug. 11, 1925. 4 1,549,529

s. R. FISHER I nuconnme cmmnmwm FOR GAS 7 Filed Aug. 8, 1924 2-- Sheets-Shutz ATTORNEY WITNESS:

ent tries.

STEEVART R. FISHER, OF lltIARZNETTE, WISCONSIN.

RECORDING CALORIMETER FOR GAS.

0 (4H tU/lO'HL it 'maZ/ concern:

Be it known that I, STEWART lit. F rsrrnn, a citizen of tie United States, residing at li'iarinctte, in the county of Marinette and State of Wisconsin, have invented new and useful Improvements in Recording Calorimeters for Gas, or which the following is a. specification.

The general object of my said invention is the provision of a recording calorimeter that is at once simple and durable in construction, and etiicient in operation.

To the attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the accompanying drawings, forming part of this specification Figure 1 is a view of my novel calorimeter, partly in vertical section and partly in elevation.

Figure2 is a detail top plan view of a portion of the device.

Figure 8 is a horizontal section taken in the plane indicated by the line 33 of Figure 1.

Figure l is an enlarged fragmentary section hereinafter explicitly referred to.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

1 illustrate in Figure 1, a Bunsen burner 1 designed to be supplied with gas through a valved conduit 2, and I also illustrate a re cording instrument 3 which is of well known type and need not be described in detail except to say that the expansion of air in a chamber t operates the pointer 5 which makes a record on a dial or chart designated by 6, the instrument 3 being connected with the top of the chamber 4 through the medium of a conduit 7.

The chamber 4 is carried by and depends from a plate 8 having apertures 9 for the upward passage of products of combustion from the burner 1.

Surrounding the plate 9 is a cylinder 10 of metal which is shouldered at 11 to seat the plate 9 and is provided with a comparatively large portion 12 which extends a considerable distance above the plate 8 with a view to lessening the liability of atmospheric air aii'ecting the chamber 4-.

Disposed below the chamber 4 and receiving the Bunsen humor 1 is a combustion flue member 13, the upper edge of which is preferably shaped as shown in Figure 1 to ail'ord openings 1 1 for the lateral escape of heated products of combustion and air. The lower end of the flue member 13 is open as .is also the upper end thereof, and the Bunsen burner 1 is carried by a bracket 15 appropriately aiiixed at 16 on the lower portion of the flue men'iber 13.

An annulus 17 surrounds and is fixed to the flue member 13 at an intermediate point in the height of the latter. On the said annulus 17 is an upwarc ly and inwardly directed portion 18 best shown in Figure 4 which receives a flange 19 on the lower end of the cylinder 10 and also receives the termi-nal portion 20 ot a lining'2l of asbestos or other appropriate non-conducting material, the function of which is to prevent or con tribute to the prevention of the escape of heat from the interior of the .cylinder '10.

At its upper edge the said asbestos lining 21 is provid d with an outwardly directed portion 22 superimposed on the cylinder shoulder 11 and interposed between said shoulder 11 and the plate 8; gnd it will be noticed that the said portion 22 is merged into an upwardly directed portion 23 arranged between the perimeter of the plate 8 and the cylinder portion 12 with a View to prevent the passage of heat from the plate 8 to said cylinder portion 12.

An important characteristic of my novel device resides in the fact that it comprises no moving parts, and from this it follows that the device will afford a more accurate record than the devices in which moving parts are included.

In the practical operation of my novel device the air in the chamber 4 is heated by the combustion of gas in the flue member 13, and the said air expands and exerts pressure for the movement of the pointer of the instrument 3.

From this it follows that there is nothing in novel device calculated to cause friction or to otherwise bring about an incorrect record; also, that my novel device requires no experience for its operation and reading.

The annulus 17 is arranged on and con-- nected to legs 24 which do not interfere with any appreciable degree with the free passage of air to the lower and of the flue member 13.

In addition to the practical advantages ascribed to my caloimeter it will be observed that the device as a Whole is simple and inexpensive and strong.

Having described my invention, what I claim and desire to secure by Letters-Patent, 1SZ- 1. In a calorimeter, the combination of an air chamber, a registering device in communication therewith, a plate fixed t0 the upper end of said chamber and surrounding the same and having apertures, a flue member disposed below the air chamber and open at its upper and lower ends, an annulus surrounding and fixed to said flue member at an intermediate point in the height thereof, a burner support d in the flue member and adapted to be connected with a source of gas supply, means connected to the annulus for the support thereof, said annulus having a fold at its outer edge, a cylinder surroundin and spaced from the air chamber and the flue member and having an outwardly directed flange at its lower end disposed in said fold of the annulus and also having a shoulder at an intermediate point of its length for the support of said perforated plate and further having a portion surrounding and extending above said plate, and a lining of non-heat conducting material arranged within the cylinder and having a flange between the annulus and the lower cylinder flange and also having a portion on the shoulder of the cylinder an I a portion between the perimeter of the perforated plate and the cylinder portion about said plate.

2. A calorimeter comprising a perforated plate, an air chamber carried by said plate and disposed below the same, a recording instrument connected with the interior of said chamber, a flue member disposed below the air chamber and open at its lower and upper ends, a burner in said member and adapted to be conn?cted with a source of gas supply, an annulus fixed to said flue member, and a cylinder joined to said annulus and arranged to support the perforated plate and having a portion extending above said plate.

3. A calorimeter comprising a perforated plate, an air chamber carried by said plate and disposed below the same, a recording instrument connected with the interior of said ehambfr, a flue member disposed below the air chamber and open at its lower and upper ends, a burner in said member and adapted to be connected with a source of gas supply, an annulus fixed to said flue member and adapted to be supported, and a cylinder joined to said annulus and arranged to support the perforated plate and having a portion extending above said plate; the portion of said cylinder between the annulus and the perforated plate being lined with non-conducting material.

In testimony whereof I affix my signature.

STEWART R. FISHER. 

